Numerical simulation of optical amplifiers based on Eu-doped polymer optical fibers

We model the light amplification in Eu-doped PMMA polymer optical fibers by solving our own rate equations that describe the physical system. These equations are firstly solved in stationary state, for a constant pump power. In this case, we determine the optimum fiber length for maximum output power. We also solve the time-dependent equations to be able to launch a pulse of signal power at the input end, together with pulsed or constant pump power. The results are useful to determine the influence of some important design parameters, such as the temporal pump width or the fiber concentration.